LG PRCKD42E Owner's Manual page 129

Error Code
Compressor 1 outlet temperature sensor defect
CH1x041
Sensor Open: decide 3 min. after Comp start
Sensor Short: decide immediately
Low pressure sensor defect
CH1x042
Sensor Open/Short
High pressure sensor defect
CH1x043
Sensor Open/Short
Outdoor unit air temperature sensor defect
CH1x044
Sensor Open/Short
Heat exchanger temperature sensor defect
CH1x045
Sensor Open/Short
Inlet temperature sensor defect
CH1x046
Sensor Open/Short
Among Outdoor 3 phase power open phase
CH1x050
Fan PCB, one phase of RST is not detected
Over-connection capacity error
CH1x051
Connected indoor unit capacity exceeds standard capacity
Fan Board communication error
CH1x052
Fan PCB communication defect
Indoor/outdoor unit communication defect
CH1x053
Data of indoor unit connected to outdoor unit had communication success of 1 or more times, and did not re-
ceive for 3 or more minutes
Outdoor unit 3 phase power reverse phase
CH1x054
Inverter PCB RST phase reverse wiring
Inverter PCB EEPROM error
CH1x060
Inverter PCB EEPROM Access error
Fan lock
CH1x067
Fan PCB did not reach target RPM in certain period of time
Fan CT Sensor error
CH1x075
Fan PCB CT Sensor Open/Short
Fan DC link high voltage error
CH1x076
Fan PCB detected DC link voltage is over standard value
Fan excessive voltage error
CH1x077
Fan PCB detected input voltage is over standard value
Fan start-up failure error
CH1x079
10 times / 60 minutes
Main PCB EEPROM error
CH1x086
Main PCB EEPROM Access error
Fan PCB EEPROM error
CH1x087
Fan PCB EEPROM Access error
Outdoor unit communication error
CH1x104
Slave Unit data has no response for 30 seconds
Error Type
Conditions for Cause
APPENDIX
129